The spelling of the phrase "under lonely" can be broken down using IPA phonetic transcription. The first word, "under," is pronounced as /ˈʌndər/ with the stress on the first syllable. The vowel sound in the first syllable is the "uh" sound, as in "up" or "hut." The second word, "lonely," is pronounced as /ˈloʊnli/, with the stress on the first syllable. The vowel sound in the first syllable is the "oh" sound, as in "low" or "so."